Water based drilling mud additive

Abstract

A water based fluid additive useful in drilling mud used during drilling of an oil or gas well is disclosed, produced by reacting water at temperatures between 210 DEG -280 DEG F. with a mixture comprising in percent by weight: -Gilsonite 25-30% -Tannin 7-15% -Lignite 25-35% -Sulfonating Compound 15-25% -Water Soluble Base Compound 5-15% -Methylene-Yielding Compound 1- 5% - and then removing substantially all of the remaining water to produce a dried product.

What I claim is: 
     
       1. A process for producing a water based drilling mud additive which comprises: (a) reacting with water in a first reaction zone at a temperature between 210°-280° F., a mixture having components comprising in percent by weight ratios:   ______________________________________                                    
Gilsonite               55-60%                                            
Lignite                 15-25%                                            
Sodium Sulfite          15-25%                                            
Water Soluble Base Compound                                               
                        5-10%                                             
______________________________________                                    
        for a period of time between 0.5-3.0 hours;   (b) reacting with water in a second reaction zone at a temperature between 210°-280° F., a mixture having components comprising in percent by weight ratios:   ______________________________________                                    
Tannin               25-40%                                               
Lignite              35-45%                                               
Sodium Sulfite       15-20%                                               
Paraformaldehyde     1- 5%                                                
Water Soluble Base Compound                                               
                      5-15%                                               
______________________________________                                    
        for a period of time between 0.5-3.0 hours;   (c) removing by drying from said reaction zones substantially all of the water remaining after reacting to produce a first dried reaction product and a second dried reaction product; and   (d) blending equal portions by weight of said first and second reaction products.   
     
     
       2. A process according to claim 1, wherein the temperature in said first and second reaction zone is between 240°-270° F. 
     
     
       3. A process according to claim 1, wherein a metallic chromate compound, being at least partially soluble in water, is blended with said first and second dried products wherein the weight ratio of said metallic chromate to said first and second dried products is 0.5:10 to 2:10. 
     
     
       4. A process for producing a water based drilling mud additive which comprises: (a) reacting with water at a temperature between 210°-280° F. for a period of time between 0.5-3.0 hours, a mixture having components which comprise in percent by weight ratios:   ______________________________________                                    
Gilsonite            25-30%                                               
Lignite              25-35%                                               
Tannin               10-20%                                               
Sodium Sulfite       15-25%                                               
Paraformaldehyde     1- 5%                                                
Water Soluble Base Compound                                               
                      5-15%                                               
______________________________________                                    
        and;   (b) removing by drying substantially all of the water remaining after termination of the reacting to produce a dried product.   
     
     
       5. A process according to claim 4, wherein said temperature is between 240°-270° F. 
     
     
       6. A process according to claim 5, wherein a metallic chromate, being at least partially water soluble, is blended to said dried product wherein the weight ratio of said metallic chromate to said first and second dried products is 0.5:10 to 2:10. 
     
     
       7. A water based drilling mud additive produced according to claim 1. 
     
     
       8. A water based drilling mud additive produced according to claim 3. 
     
     
       9. A water based drilling mud additive produced according to claim 4. 
     
     
       10. A water based drilling mud additive produced according to claim 6. 
     
     
       11. A water base drilling mud for use during drilling of an oil or gas well a water based drilling mud containing an additive produced according to claim 1. 
     
     
       12. A water base drilling mud for use during drilling of an oil or gas well containing an additive produced according to claim 3. 
     
     
       13. A water base drilling mud for use during drilling of an oil or gas well containing an additive produced according to claim 4. 
     
     
       14. A water base drilling mud for using during drilling of an oil or gas well containing an additive produced according to claim 6. 
     
     
       15. A process for drilling an oil or gas well, which comprises circulating in said well while drilling a water based drilling mud containing an additive produced according to claim 1. 
     
     
       16. A process for drilling an oil or gas well, which comprises circulating in said well while drilling a water based drilling mud containing an additive produced according to claim 3. 
     
     
       17. A process for drilling an oil or gas well, which comprises circulating in said well while drilling a water based drilling mud containing an additive produced according to claim 4. 
     
     
       18. A process for drilling an oil or gas well, which comprises circulating in said well while drilling a water based drilling mud containing an additive produced according to claim 6.